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Christopher Finley



Joined: 15 Oct 2002
Posts: 1

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when trying to compare the data in two separate oracle databases, I receive a box stating that I have to select a valid database link. What exactly is this step looking for? At this point I've already connected to both databases and selected the tables I want compared...

Tue Oct 15, 2002 9:48 am View user's profile Send private message
SysOp
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Joined: 26 Nov 2006
Posts: 6509

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You need to have a Oracle database link in order to compare data from two tables located in different databases. This allows DB difference to compare table just if both tables were in the same database.
Note that the link is needed only for the data comparison. The same link can be used to compare any two tables.

For more info on database links please see CREATE DATABASE LINK command in Oracle SQL Reference. The link is just a symbolic description of the database connection.

: when trying to compare the data in two separate oracle databases, I receive a
: box stating that I have to select a valid database link. What exactly is
: this step looking for? At this point I've already connected to both
: databases and selected the tables I want compared...

Tue Oct 15, 2002 12:18 pm View user's profile Send private message
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